City
Cleveland (Westlake)

State
Ohio

Job Type
Full-Time Regular

Job Description
BCTG's direct client is looking for a Senior AIX/Linux Adminstrator to provide hands-on technical support and perform as the SME for large enterprise-wide AIX and Linux servers environment including daily AIX and Linux administration, provision/decommission, backup/restore, monitor, problem determination and resolution, optimization, supporting highly virtualized environments, and other AIX and Linux systems administrator related activities.

Essential Duties & Responsibilities
  • Engineer and administer AIX 5.3/7.x on IBM Power7/Power8/Power9 with HMC and PowerVM (LPAR/VIOS); design LPAR layouts, CPU/memory tuning, and I/O virtualization (NPIV, vSCSI, SEA).
  • Build and maintain images with NIM; create repeatable mksysb strategies; perform OS upgrades and patching.
  • Configure and support High Availability using PowerHA SystemMirror (formerly HACMP); document and test failover procedures.
  • Plan and execute Live Partition Mobility (where applicable), firmware updates, and frame maintenance with minimal downtime.
  • Troubleshoot complex performance issues using nmon, topas, vmstat, sar, and other diagnostic tools; drive root cause analysis.
  • Administer Red Hat Enterprise Linux 7/8/9 on x86 across VMware ESXi and KVM; standardize gold images and hardening baselines.
  • Automate provisioning/configuration with Ansible; codify common tasks and enforce via pipelines.
  • Manage kernel/OS patching, package repositories, and vulnerability remediation in partnership with Security.
  • Monitor and tune system performance (CPU, memory, I/O, filesystem); analyze and resolve production incidents.
  • Own backup/restore for OS and application data using IBM Spectrum Protect (TSM); run regular restore tests and document RPO/RTO coverage.
  • Administer enterprise schedulers (HCL Workload Automation, Broadcom Autosys) on AIX; coordinate with application teams.
  • Partner with Network and Storage teams on SAN zoning, multipathing, and throughput optimization; validate NPIV/vSCSI designs.
  • Lead incident, problem, and change management (ITIL-aligned); write clear change plans, perform post-incident reviews, maintain runbooks.
  • Drive capacity planning and forecasting; provide estimates for new workloads, migrations, and refresh projects.
  • As a SME mentor junior administrators; review designs and automation for quality and security; champion best practices across the team.
  • Participate in an on-call rotation and after-hours maintenance windows; continuously reduce toil through automation and better observability.
Required Experience:
  • 8+ years of progressively responsible experience administering AIX (5.3/7.x) on IBM Power7/Power8/Power9 with PowerVM/VIOS, and administering Red Hat Enterprise Linux 7/8/9 in enterprise environments.
  • Hands-on experience with HMC, NIM, PowerHA SystemMirror (HACMP), and Live Partition Mobility.
  • Strong skills in scripting (Korn/Bourne shell, Perl, or Python) for automation and process improvement.
  • Experience supporting virtualized environments (VMware ESXi, KVM) and enterprise job schedulers (HCL Workload Automation, Broadcom Autosys).
  • Knowledge of backup/restore procedures using IBM Spectrum Protect (TSM) and proven ability to execute DR tests.
  • Solid foundational knowledge in server hardware, SAN/storage virtualization (NPIV, vSCSI), and networking fundamentals.
  • Effective communication, documentation, and collaboration skills with cross-functional teams.
  • Ability to participate in on-call rotation and perform after-hours maintenance as needed.
  • Leadership experience mentoring junior administrators or leading infrastructure projects.
Preferred Skills
  • Experience with AIX 6.x or legacy AIX 5.3 migrations in production environments.
  • Exposure to cloud platforms (AWS, Azure) for hybrid infrastructure integration.
  • Experience with Ansible automation at scale, including CI/CD integration of infrastructure code.
  • Performance tuning expertise using nmon, topas, vmstat, sar, perf tools.
  • Experience with ITIL-aligned change/incident/problem management processes.
  • Familiarity with security compliance frameworks and vulnerability management (e.g., CIS hardening, patch orchestration).

Education Required Bachelor’s or Master’s degree in Information Systems, Computer Science, or related IT field.
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